Lock



Dec. '7, 1926.

C. DALBONI ET AL .LOCK

Original Filed Jan. 4, 1924 2 Sheets-Shet 2 at 'itsinner end, and openat its opposite end, which ispreseiited to the outside of the door, soas to permit the room or other space, lentrance to which the doorcontrols, to be entercdby manipulating thelock from without.y The casinghas aflange 6 at its i' outer end to abut against the outside of thedoorarou'nd vtlie'edge of the recess 'that re- Vceives it. We may use ascrew l7, passing through theinner end `of the recess. into'a hole 8 inthe innerv end oi the casing toV vmake the/casing fast. 'l This innerend hasV 10, `and Vmoved in an-opening shown diagrainmatically at 14 inthebolt 3, so that when the plug'10 'is turned inthercasing 5, the boltcan be projected or drawn back.

The key-plughor Abarrel 1,0 comprises a front orouter end 15 and a `rearorV inner end` 16, connected byV acore or body17 otV reducedvthickness'fand placeda little to one side ofthe center or long axis ofthe plug'. In the front end; is akey-hole 18 igure 3) leading to akey-wayiin the bottom oi' the e endsvof the recesses 19. VOn thev top,of thebody. ln therinner face or the core ,areV ytransverse recesses19, separated by ribs 20,

and receiving pinv tumblers 21 (Figures 9,v 10 and 14); Each tumblerhasarow of tee-thv 22 along one edge, and ,presents these teethsoutwardly.through the open sidesot` vthe recesses.

The recesses are open/at the tops to receive springs 23 which tend topress the tumblers down against the lower core is a cover orretainingplate'24 to hold the springs in and a similar plate closes the bottom ofthe key-way along the underside of the core 17 `The recesses19communicate with`the 'keywayv past their lower ends 25,

so that a key can raise the tumblers 'and screws 24?L hold the cover 24in position.'v

Each tumbler also comprises `not only a member having teeth 22,.an`d asmooth'surface'26 beside the teeth, but ralso aV member 27yhavingsimilar teeth 22j-on one face, and a ,projection28, bearing s.errations 29 o n its opposite face. The teeth of the member 27 canmeshwith the teeth 22, konthe Vother member,i and by varying theengagementoft' the two members, the.y -e'iiective length 'of each tumblerfgcan bealtered.V At 30 is a con` ltrolling elementhavingr slots31.V 'The elefment'fits. against the core 17, overthe tumblers,vand the projections 28enter the slots; when thelteetli 221er the` two membersbf eachf tumbleraref'engagingv one another.

. Therefore, one vmember of each tumbler 'can slide up'and down'in itsrecess 19, andI lihe other member caii/movegup and down with Yin; the,projection 28, sliding in the adjacent slotY 31,'butv none of thenieinbers`27 can Leidas@c move' sideways over upon the'rsmooth surace26, unless the element V30 ismoved.

This element is not as long as. the core 17.`

ltyhas a projection 32 at one end'to enter a notch in the head 15, and aprojection 33 at its oppositeend vto enter a similar notchV in thehead16. Gn the projection 32v may be a small knob strikes the inside taceofl the endV 15. Nor- 34 to allowy the element to be pulled forward a.little till'its front edge mallyl the rear edge of the element isr heldfagainst the head 16 and the .front edge'awayk 'from the head 15. vItisretained in such po sition by a keeper 35, which can releasethe element.This `keeper is a plate, to overlie Vthe element 30, and has alongitudinalslot 36. It al'sohas projections V37'at each endl Von oneface, to extend out beyond the pe-` riphery of theends 15 and 16 intoaper-y tures 38 of the casing 6 (Figure 1). In line withprojections 37are guide arinsgpro-v y jecting from thevopposit'e face of the keeper36, to move in guideways 40 in the inner faces ot' the ends 15 and 16and throughthe core 17. On the ,opposite or outer `face of the coreV isaleaf spring`g41, pressing at its SEU ends on the Vends of the arms39andheld tast bya'screw 26 in the center. l The keeper 35 is also pressedupon by a spring part 42', opposed to spring 41,v and mounted on a'shaft 43-having journals 44 at Vits ends toengage the heads 15 aiid`16.

The members 27 are wider-than the slots 31 lexcept for theprojections28.

On the lower side off'the projection 33 is av The plate 35` has at itsadjacent .end aboveV one arm 39, a third 'arm 46 to move Vnotch 45.`

ina guide way 47 in the headlG and'coi'e 17. This arm has a notch 48 inlits` upperV edge. vNhen the tumblersare allmoved to l l. Ii:

bringthe projections28 into registry with ,i

than the spring part 41, forces the keeper'35 theslot`36, the spiing'42,Vwhich. is stronger Y against the element and arm 46 moves its notch 43intoY line with the lower Vedge ot the projection 33. jThen the head 34can be drawn out to pull the element forward and disengage the members27 n YWhen the lock is in such position thatjthe boltv 3 is in thestrikeV plate 4, Vvthe tumblers will be in various positions, with theprojections 28 out offregistryivith the slot 36. See Figure 17. "lhese'lprojections 28now 4hold the keeper y35 away from the element 30ri'orcingthe projections or ,dogsg37 into the opening 38. 'Hencevftlie plug Vortumbler carrier 10 cannot turn.1 The arm 4'6'has'its .Y

upper edge,v nbeyondpthe notch l V48, in the .notch`45 of "the element30,1and the elementi i fis held in. fldfhon vthe right'key `iswpushedinto the hole-*513,'tlie tumblersj arepushed up,

in the Acore' 17 till `all thevgprojections 2,6,"

register ywithl the slot 36.` V',"lherithe spring `42 overcomes thespring 41, and''the Vdogs 37 are Withdrawn 'roni the openings 38 in the`Leila lmove the cam-13 and retract the bolt. project theV boltV 'againr`the 'plug 1s turned back' to jriginal position andv thevkeywith# drawn.A

, 'To change the combination, one irst pulls out the key used" to'vWithdraw the boit y3.

Thenfhe pulls the head 34'tomovefthe rin-einp-` bers Qfin'to theVpositions' shown in Figure =f :18, the element drawing the members 27side- Ways `with the'projections 28` sliding' in the slot 36.15B a'nevvkeyisfinserted into the ,plug lOQ'the members of the tumblers Zl'jhav-vling Vthe teeth 22 j and smooth surfaces will 'now befforced into'positions corresponding p thenl be completed through the battery bellVto the heightI of thefteeth on thejnenA key. Then theV element ispushed `floackand the new key made to vturn theplugto shoot i' an arm)Withafwrist projection 50,'"orining a er1-lnk, received in a' notch 51in the end i6.V In the notchf'is aY spring 52v pressing 1' ontvvard.`This crank" normally `presses `againstl the vkeeper Wienthe .plug isfirst turned to Withdraw theb'olt, this crank is carried lto an openingsuch y as the opening 381A adjacent the head 16,v afterV "the adjacentydog 371eaves this opening, andthe spring e V(it-hen moves thecrank torotate the shaft and rela; `the spring 42;' 'Hencerthe spring 41 canact-again to v-ipush thef'guides andv Vare held 'jby theirV teeth; inttheir :new

f relativepositions"andfafter thefbolt 3 is projected once more thenewkey'must be used to L'fopenthelocki The dogs 37 Lproject. far enoughvfrom the i keeper 35to enter vthe apertures 38 Whenthe projections 28do notregister with the'slot V365lottare Withinv the compass-of theheads1-'5 andv'l'vvhen theV spring 42 `forces the keeper .356 against element30.**- When the' crank is released, tlie"`spring il can move. the arms39 to movethedo'gs `37,andkeeper "35 V`out-'Ward just ,alittlerbeforefthe-dogsf 'strike the: inside of casi-ng Y5.A

fyflthe cam 13 and openingl'i'xveresheped '"p 't-"ofvirequiref,1movement to the leftinsteadof JQ theiight (Figures ll iand 2f' 'toWithdraw ',{with,the'adjacenti-dog-B? awvayffronithe 2id-V'A74Fja'eent'ppening'f38g'. Thenanotheropening;V 'xvoiildhe providedpin theic-asing 5'to're`ceiye A 'thejxvrist vprejection- ,50'E WhenthepluglOhas Ibeenijotat'edjagitar asfneeded.l "Thisprojecfti'OI1f50'fmayfstiekout beyndv'thejrimof the f purpose 'shaft 43 has atone end of this projectionlin 'Figure l 'is indicated at 53 Where thecasing awayi". e At 54 arepiecesof insulation on'eachfside 'head' l16,v`but not *thearni 19. "lhempositionA 6 is shown" broken of the opening38. at the inner yendothe casing 5*(Figure l) yandjon'thesepieces'is'made fast 'aU-shaped contact element 55 'congroundedon ltherstrikefplate 4f 1f LOne '.nected by'a Wire 56 to a battery` 57V througha bell vor alarm :device: 58 the battery being should insert the' Wrongkey and turnvthe-,l

plug 10 yWithoutdrawingback thed'ogsf37, the innermost dogjwould touchone side orl the other ofthe element 55. Aroircuitivould Wire 56 vandmetal p'ar-ts'oic the lock, and anD alarmgiven.V In' the strike'plateisaspring 1eaf5955andfat`60"is a-binding post, insulated ik l by 'a sleeve'orbus'hing 6l.A "When the door 2 is fastenedthe bolt .3'touchesthe-'spring 59, Aandfvifone tries to forceY the door open', the .spring59V is made totouch' lthe inner l*endroi- 'the post 60.l Analarm willagainresult. Hence Vtheflock cannot Jbe picked nor i theV door jimm'iedopen Without avvarning bev Y.

ing automatically given.

l yThe projectiofns'v28 may 35;l but We 'show lthefendsfof the"projections Y be smoothfjontheir f, ends :ind so'jniaythe'inside-face`of the keepery WithserrttionsQSandtheyplatejvvith .s'imi-V larserrations 62. fWi'th V-these" serrationsji the lookv cannot be picked.-To pick it,1one would4V have "to insert avtool'inthe key hole lSIan'dtry to I noveffthe tumblersfsideways to-iind prevent: the', ri

v`1 10uA soundv When-the projections oome" oppo-' fsite the'V slotf365;Withtthefserrations, 'asfsoon e' as" the tumblers are moved*'sidevvay's,` v`lthe members. 2 7 Will bind-'against-.the keeper 35.l

Y 1 ght'key from"nr'ioving.'the lturnble'rs "upward f Y *,-jThe`serrations6 2 of the keeper ,-E S 5;,fand-v l Athe* teeth`729, f may'be' lower and' less abrupt- 'tharr the teeth 22dy ofthe twomembers?"inaking vup each '.otfthe'tnmblerslQZ, lSo'that. when -theIdogs 37 arein the'` Openings 38, vand-ja-A key Vfis insertedinthekeyslot 18,--"to move up the ltuniblers andfbrin'g'the tprOjGGtions v.287.into

line With-fthe' slot v13.6,' thef tvvo 'rnembers`- off 115i?V eachjtuinbler rnai-ntainif their engagementLV f. v

H `Our lock is very: usefuljbecauseV it( enablesf -`y f VjtheoWher of-Van apartment', the entrance to Y {"Whiclr the lock controls, `to"changev the `eomjbinationofthe lock at-W'iil rnerel'yfby chang# 'ing.thekey; Atfthe:f1-lock isni'ounted;iupo'n',l dooro-fthe v 'ownersfhomehecan' use; anyA key he Wants tof'kvo'pen and vclose the flock; s Phegoes in and one-tand change 'his .key; .Y

Willjfffsuchi lock;.ijsxemplo'yed v'orf-Lth occnfp anti E can enter withthe. kev lWh ieh ist? n..

fas

also cannotbe :pickedand always will give Warning if tampered with. j

:The Wire 56 can be led from the batter-y to a metal plate 63 in thedoor sill 64. The

door l may have `a bushing' 6 5, With a hole for a contact brush' 6,6having acollar 67, a spring 68 in the bushing pressing the brush downtokeep. `'the brush against 'the *to* the element 55. Vthe inner side 63.'The collar T'engages'the endet' ushing to hold the brush 66 inside'theFrom the 'bushing a Wire `69 leads This Wire 69 may be on of the door 1,sol as'to'be pro- .plate the b bushing.

jected. e Y f lWhile theL dog` 37 at the inner end of the plug Willstrike against the element 55 at one side or the other if the lock istampered With, the Wrist projection Will not reach the element 55,evenif thisprojectien enters the said opening when the right keyopensthe lock. The end L of the .projectionw() 'and the other parts vcaneasily, be so proportioned and shaped as to give this The recess toreceive the casingV 5, is cut fout at 70- (Figure y2) enough to makeroom bclieve to be new and desire to secure and vrocable pin tumbler:comprising members. l

tuted of members arr f protectfby Letters Patent @fv the VUnited YStates isti-vf. e

.1; Infalock, the combination `eta recip- Ahavinef teethV for thead'ustable envafement gp l Y I C t3 ,J of said members, a controllingelement vfory said tiimblers, and a keeper having a 'slot Y Yto becontrolled by theztumbl'ersfsaid keeper having e n one Y or moreY catchprojections thereon. Y y Y 2.' Ina lock the combination 4of-arecipro'cable: pin. tumbler comprising a member `having a-prejection, akeeperto be con-Y trolledby the tumblers, and serrations on.`

V.the-keeper and Ythe. projectionsV ,of the f having V tions wheny ment,catchjprojections Aon .thejkeepem the*V tumbler tofprevent the pickingof the lock. 3. In .a lock the combination Vof acasing,

Y -a rkey-plgug'fin the casing, tumblerfin the rkey-,plu

bers for adjustable engagement with `each g, eachtumbler consisting ofniemother, onek member having projection serrated at itsv extremity, jacontrolling element slots to receiveithe projections, a

keeper to -be cont-rolled by the tiimblers,'the Vkeeper having a'slottoreceivey said projectlie projections move into alinecasinghavingopenings to receive said projections, a spring to engage'tliekeeper and j imp el-said catch projections intosa'id open'-V vings, a shaft to which the spring isattached,`

n 51. a': crank on said shaft, the casing having alelement, and a knobon theelement i the lock.

' releasing the casing according to the posil vtion of the tumblers.

. anda partto engagejlsaid keep recess to receive the crank and relaxsaid spring, a vsecond spring on the plug, arms on the keeper to beengagedby'said spring y in opposition to the Yfirst spring, a notchedarmV on the keeper to hold and release the accessible fromk theV outsideofY the casing, the keeper being serrated to cooperate with the'seirations on the projections of the members of thetumble'rs vandprevent the picking 'of 4'. A lock comprisinga pin tumbler con-.stituted of members adjustablewith respectv to each other, andincludingra keeper to hold the members in 'adjusted position, the keeperbeing movable when the tiimblers havev been actuated to'fpredeterminedposimona j I p 5. A lockconiprising'a casing,` a plug' received in thecasing, tumblers 'inthe plug. each,comprising ladjustable members, andakeeper for maintaining "thefinembers in aujusted positions, said'keeperengaging or ,6. A lock comprising a tumbler constii tuted of membersadjustable With respect Ito .each other, and a keeper having teeth toVViold' Vtliemembers in adjusted.Y position.` I

-j 7. A lock comprising a p inltfumbl'er 'constit-uted of membersadjustable With respect to eaclibther, and. including a keeperfto holdtlie'inembe'rs in ,adjusted position,` and apart4 toY engage ,andVreleasethe keeper to A.maintain the adjustmentY of said l members orenable said adjustment to be changed;

8.v AV lockcomprising a tumbler .constivativeto each other, one otsaidmembers `having.altoothe-d surface, a keeper having teeth Vto engagesaid last-named member, j l f j l er kto make the teeth oi thekeepermesh with the teeth of said flastlnamed vmember, to Ahold said. membersinV adjusted position, v.or release said keeper to enable the members tobereadjusted.v`

aiiged to be moved relv 9. A lock comprisingfa plug carrying one ormoretumblers, eachtiimbler comprising adjustable. members, anda controllingeleting movement thereof by a key, but movable to disengage said membersto. permit the adjustment thereof yto vbe changed *n before theyV areagain -ii'ioved into engagement lwith each other. l 'y Y i0. A. lock coprisingr a plug, `one or more .tumblersV mounted. to.4 vreciprocate onsaid plug, a controlling elementliavin'g slots to permit thevdisplacement.y of said `mem- 1 'bers When'akeyyisiiisertedjint-o saidplug,

`eachl Voi' saidtumblers comprising-tivo menibers adjustablyengagingeach'k other, the element' being movable toactiiate one mein#ber et Veach otfsaid -tiimblers'sidewise'and ment Vengaging Ysaidmembers and permit' z said members other.

i l disengage itfrom' the ,other member to enable the adjustment v,to bechanged. before are 'reengaged with each l1. A lock comprising aplughaving one or more tumblers, each of said tumblers comprising v membersf. adjustably engaging' each other, and a keeper for said tumblers,

Vsaid keeper having a ,slot to release one] iu Vmember of each'tumblerupon the-tumblers Y being moved `by a key 'into predetermined YVposition With respect to said` slot, for read-A 1 justment Vot therelative positionv of said members. Y. 12.` A lock comprising aplug,`one or more tumblers reciprocablyv mounted insaid plug, each ofsaid .tumblers comprising members adjustably engaging each other, `a

keeper on the plug for said tumblers, Vsaid keeper having a slotandmounted to release said tumblers When thelatter are actuated byva keyinto predetermined position With` respect to said slot for readjustmentof said members, and a spring on the plug normally engaging the keeperto hold it in operative position Withf respect to the tumblers, butreleasable When the keeper is in position, to

permit said members to be adj-usted fand reenga'ged With each other. 4

13. 1A lock comprising` 'a plug, a vplurality of tuinblers mounted tomove in said plug,

each tumbler comprising members adjust- Y vably engaging each other, acontrolling elev ment to aetuate the members into 'and out of engagementwithk each other, a keeper onl the plug, shaped, when the tumblers arekey, to release the tumblers, and a spring normally causing the keeperto maintain said members in the desired adjustment, but releasable Whenthe tumblers are moved kto the'aforesaid predetermined position, to

leach other, and including a keeper to hold the `members in adjustedposition.

lIn testimony whereof, We .have signed actuated to predeterminedposition byA a.-

our ynames to this speeiicationthis 5th day Of October, 1923. Y

CARLO DALiBONI. ANNIBALE GASPERETTI.

